An alert for when someone leaves the game you are spectating.

It would be nice to have some kind of alert for when spectating if the player you are watching exits the game. Say I want to duo with a friend, but he is in a game and I dont want to start one and miss out on the duo. I will spectate them like any other person would. But their game ends right as I enter spectator mode. They can spam chat, but if I have it off I don't see it. Especially if I am not paying attention to it.

So it would be nice to have some kind of alert for spectators that would happen when the game being watched ends.